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Hands-On Genetic Algorithms with Python

Hands-On Genetic Algorithms with Python - Second Edition

By : Eyal Wirsansky
4.8 (5)
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Hands-On Genetic Algorithms with Python

Hands-On Genetic Algorithms with Python

4.8 (5)
By: Eyal Wirsansky

Overview of this book

Written by Eyal Wirsansky, a senior data scientist and AI researcher with over 25 years of experience and a research background in genetic algorithms and neural networks, Hands-On Genetic Algorithms with Python offers expert insights and practical knowledge to master genetic algorithms. After an introduction to genetic algorithms and their principles of operation, you’ll find out how they differ from traditional algorithms and the types of problems they can solve, followed by applying them to search and optimization tasks such as planning, scheduling, gaming, and analytics. As you progress, you’ll delve into explainable AI and apply genetic algorithms to AI to improve machine learning and deep learning models, as well as tackle reinforcement learning and NLP tasks. This updated second edition further expands on applying genetic algorithms to NLP and XAI and speeding up genetic algorithms with concurrency and cloud computing. You’ll also get to grips with the NEAT algorithm. The book concludes with an image reconstruction project and other related technologies for future applications. By the end of this book, you’ll have gained hands-on experience in applying genetic algorithms across a variety of fields, with emphasis on artificial intelligence with Python.
Table of Contents (24 chapters)
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1
Part 1: The Basics of Genetic Algorithms
4
Part 2: Solving Problems with Genetic Algorithms
9
Part 3: Artificial Intelligence Applications of Genetic Algorithms
16
Part 4: Enhancing Performance with Concurrency and Cloud Strategies
19
Part 5: Related Technologies

Selection methods

Selection is used at the beginning of each cycle of the genetic algorithm flow to pick individuals from the current population that will be used as parents for the individuals of the next generation. The selection is probability-based, and the probability of an individual being picked is tied to its fitness value, in a way that it gives an advantage to individuals with higher fitness values.

The following sections describe some of the commonly used selection methods and their characteristics.

Roulette wheel selection

In the roulette wheel selection method, also known as fitness proportionate selection (FPS), the probability of selecting an individual is directly proportionate to its fitness value. This is comparable to using a roulette wheel in a casino and assigning each individual a portion of the wheel proportional to its fitness value. When the wheel is turned, the odds of each individual being selected are proportional to the size of the portion of the...

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